Home / 109,507.73-151,111.62-61,772.81

Finding the Fourth Proportional to 109,507.73, 151,111.62 and 61,772.81

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Solution

The fourth proportional to 109,507.73, 151,111.62 and 61,772.81 is: 85,241.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,507.73 : 151,111.62 = 61,772.81 : x
  2. Step 2: Convert to fraction form
    109,507.73/151,111.62 = 61,772.81/x
  3. Step 3: Cross multiply
    109,507.73x = 151,111.62 × 61,772.81
  4. Step 4: Simplify right side
    109,507.73x = 9,334,589,391.05
  5. Step 5: Solve for x
    x = 9,334,589,391.05/109,507.73
  6. Step 6: Final answer
    x = 85,241.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.